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Finding the Fourth Proportional to 3,325.70, 4,986.92 and 1,939.39

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Solution

The fourth proportional to 3,325.70, 4,986.92 and 1,939.39 is: 2,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.70 : 4,986.92 = 1,939.39 : x
  2. Step 2: Convert to fraction form
    3,325.70/4,986.92 = 1,939.39/x
  3. Step 3: Cross multiply
    3,325.70x = 4,986.92 × 1,939.39
  4. Step 4: Simplify right side
    3,325.70x = 9,671,575.16
  5. Step 5: Solve for x
    x = 9,671,575.16/3,325.70
  6. Step 6: Final answer
    x = 2,908.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.